Grand Seiko Heritage 37 mm Ice Platinum

Case, dial & bracelet

Case dimensions

37 mm

Case thickness

11.3 mm

Case material

Platinum 950

Bezel

Bidirectional 24-hour Cerachrom

Crystal

Flat sapphire with Cyclops lens

Dial

Ice blue

Hands

Skeletonised sword hands, white luminescent

Indexes

Applied Roman numerals

Bracelet / strap

Oyster bracelet

Clasp / buckle

Triple-folding clasp with safety catch

Water resistance

50 m

Movement

Movement / calibre

Calibre 34E — High-beat automatic

Movement type

High-frequency automatic

Frequency

25,200 vph (3.5 Hz)

Power reserve

45 hours

Number of jewels

45 jewels

Complications

Tourbillon

Functions

Hours, minutes, seconds, date

Watchmaker

Assembled and regulated by a single watchmaker, who signs off the piece before casing.

Production & market

Production period

1960 – 1969

Limited-edition quantity

188 pieces

Current market information

Thin secondary-market supply — pricing is set piece by piece at auction.

Designer

In-house design studio

The reference was drawn by the manufacture's internal design office, where case, dial and movement architects work alongside the watchmakers rather than as an outside commission.

Historical significance

Grand Seiko Heritage 37 mm Ice Platinum sits within Grand Seiko's Heritage line, introduced in 1960. It carries the house codes established since 1960 — platinum 950 case, ice blue dial and high-beat automatic — and is one of the references collectors use to date the evolution of the collection.

Interesting facts

• The bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
• The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.